---
product_id: 88419042
title: "240W Power Supply Unit PSU for DELL Optiplex 390 790 960 990 3010 7010 9010,Only for Small Form Factor SFF H240ES-00 D240ES-00 AC240AS-00 AC240ES-00 DPS-240WB L240AS-00 H240AS-00 3WN11"
brand: "s-union"
price: "A$152"
currency: AUD
in_stock: true
reviews_count: 13
category: "S Union"
url: https://www.desertcart.com.au/products/88419042-240w-power-supply-unit-psu-for-dell-optiplex-390-790
store_origin: AU
region: Australia
---

# 240W max power output 100-240V AC input range SFF Dell OptiPlex compatibility 240W Power Supply Unit PSU for DELL Optiplex 390 790 960 990 3010 7010 9010,Only for Small Form Factor SFF H240ES-00 D240ES-00 AC240AS-00 AC240ES-00 DPS-240WB L240AS-00 H240AS-00 3WN11

**Brand:** s-union
**Price:** A$152
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your productivity with precision-fit energy!

## Quick Answers

- **What is this?** 240W Power Supply Unit PSU for DELL Optiplex 390 790 960 990 3010 7010 9010,Only for Small Form Factor SFF H240ES-00 D240ES-00 AC240AS-00 AC240ES-00 DPS-240WB L240AS-00 H240AS-00 3WN11 by s-union
- **How much does it cost?** A$152 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/88419042-240w-power-supply-unit-psu-for-dell-optiplex-390-790)

## Best For

- s-union enthusiasts

## Why This Product

- Trusted s-union brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Replacement:** Effortless installation to revive your system in minutes
- • **Power-packed 240W Output:** Reliable energy boost tailored for Dell SFF desktops
- • **Wide Voltage Compatibility:** Seamlessly supports 100-240V AC input for global use
- • **Risk-free Quality Assurance:** One-month free return service for total peace of mind
- • **Precision Fit for Dell OptiPlex:** Exclusively designed for 390, 790, 960, 990, 3010, 7010, 9010 models

## Overview

The S-Union 240W Power Supply Unit is a dedicated replacement PSU engineered exclusively for Dell OptiPlex small form factor desktops (models 390 through 9010). It supports a broad AC input range (100-240V) and delivers a stable 240W output, ensuring reliable performance. Designed for easy installation and backed by a one-month free return policy, it’s the perfect upgrade to keep your Dell SFF running smoothly.

## Description

Buy

Review: Easy Fit, Works great! - Perfect! Fairly Straightforward to replace the failed unit, and pop this one straight in!
Review: Works fine - It makes my computer power on, hasn’t failed yet and is cheap. No problems so far.

## Features

- 【Compatible Model】The power supply is only work for Dell OptiPlex 390 790 960 990 3010 7010 9010 Desktop (Dell SFF System) . AC Input: 100-240V/4A (50-60HZ), DC Output:Max Output Power: 240W.
- 【NOTA】The power supply is not work for Dell Mt Mini Tower Systems, DT Desktop System, USFF Ultra Small Form Factor Systems
- 【Compatible Part Number】3WN11 709MT 592JG 66VFV CCCVC RV1C4 J50TW 2TXYM
- 【Compatible Model Number】H240AS-00, AC240AS-00, L240AS-00, AC240ES-00, H240AS-00, H240ES-00, D240ES-00, DPS-240WB
- 【Quality Service】If the product has quality problems within one month, you can contact us promptly by email and we will provide you with free return service

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0719DRZMJ |
| Are Batteries Included | No |
| Best Sellers Rank | 34,111 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 313 in Power Supplies |
| Brand | S-Union |
| Colour | white |
| Customer Reviews | 4.3 4.3 out of 5 stars (886) |
| Date First Available | 28 July 2017 |
| Form Factor | ATX |
| Guaranteed software updates until | unknown |
| Item Weight | 920 g |
| Item model number | H240AS-00 H240AS-01 AC240AS-00 3WN11 |
| Manufacturer | S-Union |
| Product Dimensions | 25.15 x 9.14 x 11.18 cm; 920 g |
| Series | ATX Power Supply |
| Wattage | 240 watts |

## Product Details

- **Brand:** S-Union
- **Compatible devices:** Dell Optiplex 390 SFF, 790 960 990 3010 7010 9010 SFF
- **Connector type:** ATX
- **Cooling method:** Air
- **Form factor:** ATX
- **Item dimensions L x W x H:** 25.1 x 9.1 x 11.2 centimetres
- **Model name:** ATX Power Supply
- **Output wattage:** 240 Watts
- **Power supply design:** Full Modular
- **Wattage:** 240 watts

## Images

![240W Power Supply Unit PSU for DELL Optiplex 390 790 960 990 3010 7010 9010,Only for Small Form Factor SFF H240ES-00 D240ES-00 AC240AS-00 AC240ES-00 DPS-240WB L240AS-00 H240AS-00 3WN11 - Image 1](https://m.media-amazon.com/images/I/61Z0OkJyuCL.jpg)

## Questions & Answers

**Q: What is the warranty on this power supply?**
A: eParts Technology Corp. Provides a 60 Day Warranty

**Q: What are the actual dimensions?  Because the 3.5 " thing amazon states seems too big.  I'm guessing that might be the packaging.**
A: The item dimensions is 9.5 x 2.5 x 3 inches. Thank you.

**Q: Is there a fan inside this power supply unit?**
A: Yes it does.  It has an intake fan that faces front when it is installed.  The PS in the Optiplex 390 died.  This unit went in and the machine has worked perfectly every since.

**Q: Where is this manufactured?**
A: Made in China.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy Fit, Works great!
*by B***9 on 14 April 2025*

Perfect! Fairly Straightforward to replace the failed unit, and pop this one straight in!

### ⭐⭐⭐⭐⭐ Works fine
*by P***T on 16 April 2024*

It makes my computer power on, hasn’t failed yet and is cheap. No problems so far.

### ⭐⭐⭐⭐ Fixing screw holes too small
*by T***B on 29 June 2020*

Bought this PSU to replace the one in my SFF Optiplex 9010 which had failed. Physically it fitted OK into the space but I couldn't use the 3 fixing screws from the old (Dell) PSU to secure it because the threaded holes in the new PSU were a smaller thread. Until I can find some smaller screws I've had to leave it unsecured in the PC case (although it clips into place which holds it pretty well). Otherwise everything OK & my PC is operational again.

## Frequently Bought Together

- S-Union 240W Power Supply Unit Replacement for Dell OptiPlex 390 790 960 990 3010 9010 Small Form Factor System SFF H240AS-00 H240AS-01 H240ES-00 D240ES-00 AC240AS-00 AC240ES-00 L240AS-00 PH3C2
- POINWER H240AS-01 H240AS-00 L240AS-00 2TXYM 3WN11 240W Optiplex 7010 SFF Power Supply for Dell Optiplex 390 790 960 990 3010 9010 Small Form Factor Systems CCCVC 3RK5T ac240as-00 D240ES-00
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**Shop now:** [https://www.desertcart.com.au/products/88419042-240w-power-supply-unit-psu-for-dell-optiplex-390-790](https://www.desertcart.com.au/products/88419042-240w-power-supply-unit-psu-for-dell-optiplex-390-790)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-08*